Two additions to my shop tooling.

[TomG]

(08-21-2013, 09:50 AM)ml_woy Wrote: The tap had four flutes, like all of my taps. I believe the one that broke was a plug tap. I have a bunch of 1/4 x 20 taps, this one that broke was a new tap besides that I had purchased from Enco in a set of three.

That is your problem. It's time to invest in some two flute spiral point taps. Four flute taps are hand taps and require the chip to be broken often, or the chips will build up and the tap will break instead.

Tom